Sharp LC-24LE250EK (serv.man4) Service Manual ▷ View online
33
LC-22LE250
LC-24LE250
18
Table 6: Pin functions
MP1484
a)
General Description
The MP1484 is a monolithic synchronous buck regulator. The device integrates top and
bottom 85m
MOSFETS that provide 3A of continuous load current over a wide operating
input voltage of 4.75V to 18V. Current mode control provides fast transient response and
cycle-by-cycle current limit.
An adjustable soft-start prevents inrush current at turn-on and in shutdown mode, the
supply current drops below 1
A.
The MP1484 is PIN compatible to the MP1482 2A/18V/Synchronous Step-Down Converter.
b)
Features
• 3A Continuous Output Current
• Wide 4.75V to 18V Operating Input Range
• Integrated 85m
Power MOSFET Switches
34
LC-24LE250
LC-22LE250
35
LC-22LE250
LC-24LE250
36
LC-24LE250
LC-22LE250
21
• Fast Transient Response
• Adjustable Output Voltage
• Power-On-Reset Monitoring on Both VCNTL and VIN Pins
• Internal Soft-Start
• Current-Limit and ShortCurrent-Limit Protections
• Thermal Shutdown with Hysteresis
• Open-Drain VOUT Voltage Indicator (POK)
• Low Shutdown Quiescent Current (< 30mA )
• Shutdown/Enable Control Function
• Simple SOP-8P Package with Exposed Pad
• Lead Free and Green Devices Available (RoHS Compliant)
APPLICATIONS
• Motherboards, VGA Cards
• Notebook PCs
• Add-in Cards
Figure 9: Pin configuration
Table 8: Recommended operating conditions
Click on the first or last page to see other LC-24LE250EK (serv.man4) service manuals if exist.